[paul-nechifor]

Why do we need this?

On slow connections, the browser SDK keeps requesting full camera and point cloud streams. This leads to stale or missing frames.

What is this feature?

Added automatic adjustments that lower quality or frame rate when the connection is congested and restore the requested settings when it recovers. Lower priority streams are reduced first, and a single video viewer can change quality without reconnecting. Some slow-link benchmark targets still fail.

How to manually run this

Which issue(s) does this PR close?

Fixes

Checklist

• I have read and approved the CLA.

[github-actions]

go2 replay realtime (arm64)

Details

Benchmark suite	Current: 62177a6	Previous: 7312553	Ratio
peak memory	1719.859 MB	1744.168 MB	0.99
peak threads	370 threads	371 threads	1.00
network (transport)	2728.311 MB	2733.714 MB	1.00
disk write	1.891 MB	1.625 MB	1.16
instructions	138.787 G	137.257 G	1.01

This comment was automatically generated by workflow using github-action-benchmark.

[codecov]

Codecov Report

❌ Patch coverage is 92.34694% with 15 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
dimos/e2e_tests/test_topic_video_browser.py	0.00%	12 Missing ⚠️
dimos/web/relay_bridge/topic_video.py	93.75%	1 Missing and 1 partial ⚠️
dimos/web/relay_bridge/test_topic_relay_e2e.py	98.11%	0 Missing and 1 partial ⚠️

@@                     Coverage Diff                     @@
##           paul/feat/topic-video-sdk    #5053    +/-   ##
===========================================================
  Coverage                      83.92%   83.93%            
===========================================================
  Files                           1870     1870            
  Lines                         183842   184030   +188     
  Branches                       15147    15160    +13     
===========================================================
+ Hits                          154297   154471   +174     
- Misses                         25620    25630    +10     
- Partials                        3925     3929     +4     

Components	Coverage Δ
Tests	96.57% <91.39%> (-0.01%)	⬇️

Flag	Coverage Δ
OS-macos-latest	78.00% <67.85%> (-0.01%)	⬇️
OS-ubuntu-24.04-arm	77.77% <67.85%> (-0.01%)	⬇️
OS-ubuntu-latest	78.13% <67.85%> (-0.01%)	⬇️
Py-3.10	78.13% <67.85%> (-0.01%)	⬇️
Py-3.11	78.11% <67.85%> (-0.01%)	⬇️
Py-3.12	78.12% <67.85%> (+<0.01%)	⬆️
SelfHosted-Linux	40.92% <53.57%> (+0.01%)	⬆️
SelfHosted-macOS	40.65% <53.57%> (+0.22%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
dimos/web/relay_bridge/protocol.py	99.26% <100.00%> (-0.37%)	⬇️
dimos/web/relay_bridge/test_topic_media.py	100.00% <100.00%> (ø)
dimos/web/relay_bridge/test_topic_variants.py	99.55% <100.00%> (+0.03%)	⬆️
dimos/web/relay_bridge/test_topic_video.py	99.74% <100.00%> (+0.04%)	⬆️
dimos/web/relay_bridge/topic_profiles.py	88.76% <100.00%> (+4.05%)	⬆️
dimos/web/relay_bridge/topic_protocol.py	100.00% <100.00%> (ø)
dimos/web/relay_bridge/topic_service.py	83.75% <100.00%> (+0.56%)	⬆️
dimos/web/relay_bridge/topic_test_support.py	98.76% <ø> (ø)
dimos/web/relay_bridge/test_topic_relay_e2e.py	97.62% <98.11%> (+0.15%)	⬆️
dimos/web/relay_bridge/topic_video.py	90.83% <93.75%> (+0.24%)	⬆️
... and 1 more

... and 6 files with indirect coverage changes

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[greptile-apps]

Confidence Score: 2/5

[Medium impact] The changes reach browser topic subscriptions, relay delivery feedback, and direct-video providers.

Fix the video freeze race, lost receiver callback, and bitrate increases before merging.

Findings

1.  Quality changes can freeze video ▶
2.  Updates stop video measurements ▶
3.  Congestion can raise video bitrate ▶
4.  Caps hide invalid page settings ▶

Summary

Adds automatic topic quality and rate changes, delivery statistics, congestion feedback in pongs, and in-place video reconfiguration.

• The SDK lowers topic detail or rate when delivery slows.
• Topic viewers receive a count of congested latest-stream sends.
• A sole video viewer can change quality without replacing its track.
• Sessions report the lowest recent ping round-trip time.

_{Reviews (1) · Last reviewed commit: "test(cockpit): implement RTT on the fake..." · Reviewed by Greptile}